docs: backfill XML documentation across 756 files

Adds <summary>, <param>, <typeparam>, and <inheritdoc/> tags to public
members surfaced by commentchecker — resolves 5,847 of 5,869 issues
(99.6%) across three /fixdocs passes.

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Tests/Browse/DeployWatcherTests.cs

@@ -23,20 +23,46 @@ public sealed class DeployWatcherTests
     private sealed class FakeDeployWatchSource : IGalaxyDeployWatchSource
     {
         private readonly Func<int, Channel<DeployEvent>> _channelFactory;
+
+        /// <summary>
+        /// Gets the list of last-seen deployment times from each watch iteration.
+        /// </summary>
         public List<DateTimeOffset?> LastSeenTimes { get; } = [];
+
+        /// <summary>
+        /// Gets the number of times WatchAsync has been called.
+        /// </summary>
         public int CallCount { get; private set; }
+
+        /// <summary>
+        /// Gets or sets a function that can throw an exception on specific iterations.
+        /// </summary>
         public Func<int, Exception?>? ThrowOnIteration { get; init; }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="FakeDeployWatchSource"/> class with a single channel.
+        /// </summary>
+        /// <param name="channel">The deploy event channel to use for all iterations.</param>
         public FakeDeployWatchSource(Channel<DeployEvent> channel)
         {
             _channelFactory = _ => channel;
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="FakeDeployWatchSource"/> class with a channel factory.
+        /// </summary>
+        /// <param name="channelFactory">A factory function that creates channels for each iteration.</param>
         public FakeDeployWatchSource(Func<int, Channel<DeployEvent>> channelFactory)
         {
             _channelFactory = channelFactory;
         }
 
+        /// <summary>
+        /// Watches for deploy events asynchronously.
+        /// </summary>
+        /// <param name="lastSeenDeployTime">The last deployment time seen.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>An async enumerable of deploy events.</returns>
         public async IAsyncEnumerable<DeployEvent> WatchAsync(
             DateTimeOffset? lastSeenDeployTime,
             [EnumeratorCancellation] CancellationToken cancellationToken)
@@ -93,6 +119,7 @@ public sealed class DeployWatcherTests
         throw new TimeoutException("Condition was not met within timeout.");
     }
 
+    /// <summary>Verifies that bootstrap deploy events are suppressed.</summary>
     [Fact]
     public async Task BootstrapEventIsSuppressed()
     {
@@ -115,6 +142,7 @@ public sealed class DeployWatcherTests
         await watcher.StopAsync();
     }
 
+    /// <summary>Verifies that a deployment time change fires a rediscovery event.</summary>
     [Fact]
     public async Task DeployTimeChangeFiresRediscover()
     {
@@ -142,6 +170,7 @@ public sealed class DeployWatcherTests
         await watcher.StopAsync();
     }
 
+    /// <summary>Verifies that the same deployment time does not fire a rediscovery event.</summary>
     [Fact]
     public async Task SameDeployTimeDoesNotFire()
     {
@@ -165,6 +194,7 @@ public sealed class DeployWatcherTests
         await watcher.StopAsync();
     }
 
+    /// <summary>Verifies that a deployment time presence flip fires a rediscovery event.</summary>
     [Fact]
     public async Task TimeOfLastDeployPresentFlipFiresRediscover()
     {
@@ -191,6 +221,7 @@ public sealed class DeployWatcherTests
         await watcher.StopAsync();
     }
 
+    /// <summary>Verifies that stop cancels the watcher loop cleanly.</summary>
     [Fact]
     public async Task StopCancelsLoopCleanly()
     {
@@ -211,6 +242,7 @@ public sealed class DeployWatcherTests
         await stopTask; // observe (no) exception
     }
 
+    /// <summary>Verifies that disposing stops a running watcher.</summary>
     [Fact]
     public async Task DisposeStopsRunningWatcher()
     {
@@ -229,6 +261,7 @@ public sealed class DeployWatcherTests
         await disposeTask;
     }
 
+    /// <summary>Verifies that a source exception triggers retry with backoff.</summary>
     [Fact]
     public async Task SourceExceptionTriggersRetryWithBackoff()
     {